High-spin polaron in lightly doped CuO$_2$ planes
Abstract
We device and investigate numerically a minimal yet detailed spin polaron model that describes lightly doped CuO layers. The low-energy physics of a hole is studied by total-spin-resolved exact diagonalization on clusters of up to 32 CuO unit cells, revealing features missed by previous studies. In particular, spin-polaron states with total spin 3/2 are the lowest eigenstates in several regions of the Brillouin zone. In these regions, and also at other points the quasiparticle weight is identically zero, indicating orthogonal states to those represented in the one electron Green's function. This highlights the importance of proper treatment of spin fluctuations in the many-body background.
Cite
@article{arxiv.1010.1867,
title = {High-spin polaron in lightly doped CuO$_2$ planes},
author = {Bayo Lau and Mona Berciu and George A. Sawatzky},
journal= {arXiv preprint arXiv:1010.1867},
year = {2015}
}
Comments
To appear in Phys. Rev. Lett. Final version and Supplementary Materials will be available at the journal's website